Abstract
The solution of the stability problem of a circular sandwich ring under uniform external pressure is given in a refined statement. The need to determinate the precritical stresses in load-bearing layers in the refined statement with regard to the transverse compression of the core is established, which is the basis for the detection of the mixed flexural buckling forms (BFs) with more than two half-waves along the circumferential coordinate (n>2). It is found that sandwich structures with a determining parameter of transverse compression corresponding to the limit of transition from the mixed BFs to synphasic ones are the most efficient from the weight viewpoint.
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V. N. Paimushin and S. N. Bobrov, “Refined geometric nonlinear theory of sandwich shells with a transversely soft core of medium thickness for investigation of mixed buckling forms,” Mech. Compos. Mater.,36, No. 1, 59–66 (2000).
V. N. Paimushin, “A stability theory of sandwich construction elements. 1. Analysis of the current state and a refined classification of buckling forms,” Mech. Compos. Mater.,35, No. 6, 465–470 (1999).
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 36, No. 3, pp. 317–328, May–June, 2000.
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Paimushin, V.N., Ivanov, V.A., Bobrov, S.N. et al. Stability problem of a circular sandwich ring under uniform external pressure. Mech Compos Mater 36, 185–192 (2000). https://doi.org/10.1007/BF02681869
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DOI: https://doi.org/10.1007/BF02681869